1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "internal/cryptlib.h"
12#include <openssl/asn1.h>
13#include <openssl/asn1t.h>
14
15int ASN1_TYPE_set_octetstring(ASN1_TYPE *a, unsigned char *data, int len)
16{
17 ASN1_STRING *os;
18
19 if ((os = ASN1_OCTET_STRING_new()) == NULL)
20 return 0;
21 if (!ASN1_OCTET_STRING_set(os, data, len)) {
22 ASN1_OCTET_STRING_free(os);
23 return 0;
24 }
25 ASN1_TYPE_set(a, V_ASN1_OCTET_STRING, os);
26 return 1;
27}
28
29/* int max_len: for returned value */
30int ASN1_TYPE_get_octetstring(const ASN1_TYPE *a, unsigned char *data, int max_len)
31{
32 int ret, num;
33 const unsigned char *p;
34
35 if ((a->type != V_ASN1_OCTET_STRING) || (a->value.octet_string == NULL)) {
36 ASN1err(ASN1_F_ASN1_TYPE_GET_OCTETSTRING, ASN1_R_DATA_IS_WRONG);
37 return -1;
38 }
39 p = ASN1_STRING_get0_data(a->value.octet_string);
40 ret = ASN1_STRING_length(a->value.octet_string);
41 if (ret < max_len)
42 num = ret;
43 else
44 num = max_len;
45 memcpy(data, p, num);
46 return ret;
47}
48
49typedef struct {
50 int32_t num;
51 ASN1_OCTET_STRING *oct;
52} asn1_int_oct;
53
54ASN1_SEQUENCE(asn1_int_oct) = {
55 ASN1_EMBED(asn1_int_oct, num, INT32),
56 ASN1_SIMPLE(asn1_int_oct, oct, ASN1_OCTET_STRING)
57} static_ASN1_SEQUENCE_END(asn1_int_oct)
58
59DECLARE_ASN1_ITEM(asn1_int_oct)
60
61int ASN1_TYPE_set_int_octetstring(ASN1_TYPE *a, long num, unsigned char *data,
62 int len)
63{
64 asn1_int_oct atmp;
65 ASN1_OCTET_STRING oct;
66
67 atmp.num = num;
68 atmp.oct = &oct;
69 oct.data = data;
70 oct.type = V_ASN1_OCTET_STRING;
71 oct.length = len;
72 oct.flags = 0;
73
74 if (ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(asn1_int_oct), &atmp, &a))
75 return 1;
76 return 0;
77}
78
79/*
80 * we return the actual length...
81 */
82/* int max_len: for returned value */
83int ASN1_TYPE_get_int_octetstring(const ASN1_TYPE *a, long *num,
84 unsigned char *data, int max_len)
85{
86 asn1_int_oct *atmp = NULL;
87 int ret = -1, n;
88
89 if ((a->type != V_ASN1_SEQUENCE) || (a->value.sequence == NULL)) {
90 goto err;
91 }
92
93 atmp = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(asn1_int_oct), a);
94
95 if (atmp == NULL)
96 goto err;
97
98 if (num != NULL)
99 *num = atmp->num;
100
101 ret = ASN1_STRING_length(atmp->oct);
102 if (max_len > ret)
103 n = ret;
104 else
105 n = max_len;
106
107 if (data != NULL)
108 memcpy(data, ASN1_STRING_get0_data(atmp->oct), n);
109 if (ret == -1) {
110 err:
111 ASN1err(ASN1_F_ASN1_TYPE_GET_INT_OCTETSTRING, ASN1_R_DATA_IS_WRONG);
112 }
113 M_ASN1_free_of(atmp, asn1_int_oct);
114 return ret;
115}
116